The relationship of Demi Lovato and Wilmer Valderrama seems to be getting stronger. In fact, it looks like they are ready to take things to the next level. Latest reports reveal that the two have already moved in together and are ready to tie the knot.

A witness revealed to Radar Online what the 22-year old singer said while shopping for some home decors. The insider said, "I overheard Demi telling the salesclerk that she wanted her and her boyfriend's home to be warm and comfy."

The source added, "She said she loves reds and earth tones and wanted their bedroom to be romantic, dark and passionate." The witness also revealed that Demi bought a ton of candles because her boyfriend loves candles.

Demi Lovato and Wilmer Valderrama may already be living together, but their busy schedule keeps them apart from each other most of the time. The only way that they show their love for each other is through social media. Just recently, the "Really Don't Care" singer posted a photo of the 34-year old actor giving her a sweet kiss on the cheeks.

She posted the PDA photo on Instagram and Twitter - and captioned it: "I never post personal pictures like this but fuck.. He is perfect. I miss my @WValderrama". Their fans got thrilled when they saw the couple's adorable photo.

One of Demi's followers commented, "oh my sweet lord this is the cutest thing ever im crying so hard." Another fan posted, "NO SERIOUSLY STOP IM DYING OF CUTENESS." Rumors emerged a few weeks ago that the couple got engaged. The "Heart Attack" hitmaker and the star of "From Dusk Till Dawn" were seen wearing the same ring on the separate photos that they posted on their Instagram accounts.

A friend of the songstress revealed to Radar Online, "They are getting beyond serious. I saw them recently and she looks so happy and in love." Demi's pal added, "In fact, she is hoping that he will ask him to marry her this year."

Do you think we will hear an engagement announcement from Demi Moore and Wilmer Valderrama before this year ends?